172945801 has 8 divisors (see below), whose sum is σ = 197745920. Its totient is φ = 148169088.

The previous prime is 172945789. The next prime is 172945823. The reversal of 172945801 is 108549271.

172945801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172945801 - 2¹¹ = 172943753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172945891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14905 + ... + 23833.

It is an arithmetic number, because the mean of its divisors is an integer number (24718240).

Almost surely, 2^172945801 is an apocalyptic number.

It is an amenable number.

172945801 is a deficient number, since it is larger than the sum of its proper divisors (24800119).

172945801 is an equidigital number, since it uses as much as digits as its factorization.

172945801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11703.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 172945801 is about 13150.8859397381. The cubic root of 172945801 is about 557.1472706923.

The spelling of 172945801 in words is "one hundred seventy-two million, nine hundred forty-five thousand, eight hundred one".